JP2008094820A - Oxidation hair dye - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oxidation hair dye imparting tenseness and stiffness having excellent persistency to the hair. <P>SOLUTION: The oxidation hair dye comprises (A) one or more kinds of oxidative bases selected from para-amino phenol, ortho-amino phenol and salts thereof and (B) one or more kinds of couplers selected from meta-amino phenol, 5-amino-ortho-cresol and salts thereof and phloroglucin and α-naphthol and is free of a diamine type dye. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an oxidative hair dye that does not contain a diamine-type dye and gives the hair a lasting elasticity and firmness.

  Normally, an oxidative hair dye penetrates into the hair by mixing a first agent containing a dye intermediate and an alkali agent and a second agent containing an oxidizing agent such as hydrogen peroxide water when applied and applied to the hair. The dye intermediate is colored by oxidation polymerization. This polymerization is said to be a permanent hair dye because the molecular weight becomes higher than that before oxidation and stays in the hair after washing.

  Dye intermediates include a monomer called oxidation base that develops color by oxidative polymerization, and a monomer called coupler that does not develop color by its own polymerization but develops color by oxidation base, and usually combines these together to achieve the desired color. Is producing. In particular, diamine-type dyes such as paraphenylenediamine having a plurality of amino groups (oxidized base) and diaminophenoxyethanol salts (couplers) are blended in many commercially available oxidative hair dyes because of their good color development even in relatively small amounts. .

  In the old days, it was almost dyed in dark colors like white hair dyeing, but in recent years, it has been increasingly dyed in lighter colors than the original hair as it is said to be moistened. In this case, a small amount of the first dye intermediate may be used, but conversely, by increasing the amount of the alkaline agent, it promotes decolorization of the hair with the oxidizing agent simultaneously with the hair dyeing. Manipulation is problematic because it damages the hair tissue and causes the intercalation material to flow out, resulting in a significant reduction in hair stiffness and stiffness.

  Therefore, in order to improve the elasticity when hair is dyed, Patent Document 1 discloses a method of adding a protein hydrolyzate and an amino acid and / or amino acid derivative, and Patent Document 2 adds a specific sugar derivative and a cationic polymer compound. However, since such an additive coats the surface of the hair or is adsorbed on the surface or a relatively shallow interior, it is easily washed away by shampooing, and the firmness and firmness are not sustained. Further, even though it penetrated deeply, it was not sustained because it was washed away by several times of hair washing due to ionic bonds and the like.

  JP 7-330559 A   JP-A-8-40853   Japanese Patent Laid-Open No. 7-179325   JP 2003-95900 A   JP-A-7-228514   Special table 2005-532444 gazette

  The present invention has been made in view of the above-mentioned problems of the prior art, and provides an oxidative hair dye that gives excellent firmness and firmness to hair.

  The point of the present invention is that the dye intermediate is oxidatively polymerized in the hair and stays in the hair semipermanently. A large amount of the dye intermediate in the hair is intentionally used other than the diamine type dye having relatively good color. It is in the point which provided lasting elasticity and firmness by fastening the oxidation polymer of.

That is, this invention provides the oxidative hair dye characterized by containing the following component (A) and (B), and not containing a diamine type dye.
(A) One or more oxidation bases selected from paraaminophenol, orthoaminophenol, and salts thereof.
(B) One or more couplers selected from metaaminophenol, 5-aminoorthocresol and salts thereof, and phloroglucin and α-naphthol.

  Furthermore, the above-mentioned oxidative hair dye containing component (C) sodium hydrosulfite, and finally component (D) fatty acid ester oil comprising a fatty acid having 12 to 22 carbon atoms and a branched alkyl group having 2 to 20 carbon atoms And an emulsion type oxidative hair dye comprising one or more components selected from component (E) octyldodecanol.

  The oxidative hair dye according to the present invention is an oxidative hair dye that gives the hair excellent and durable elasticity.

  The diamine-type dye in the present invention is a dye intermediate having a plurality of amino groups, and specific oxidation bases include paraphenylenediamine and sulfates or hydrochlorides thereof, toluene-2,5-diamine (also known as para). Toluylenediamine) and sulfates or hydrochlorides thereof, N-phenylparaphenylenediamine and hydrochlorides or acetates thereof, orthochloroparaphenylenediamine sulfate and toluene-3,4-diamine, and 4,4′-diaminodiphenylamine sulfate, etc. Is mentioned.

  Specific examples of couplers among diamine type dyes include metaphenylenediamine and sulfates or hydrochlorides thereof, sulfates or hydrochlorides of 2,4-diaminophenol, 2,6-diaminopyridine, hydrochloric acid 2,4- Examples include diaminophenoxyethanol and N, N′-bis (4-aminophenyl) -2,5-diamino-1,4-quinonediimine.

  In addition, although these diamine type dyes, especially paraphenylenediamines and toluene-2,5-diamines exhibit excellent color development, sensitization to humans is also suspected (Patent Documents 3 and 4).

  The oxidative hair dye according to the present invention does not contain a diamine type dye having excellent color development and is composed of a dye intermediate having 0 to 1 amino groups.

  Specific examples of the component (A) of the present invention are paraaminophenol and its sulfate, orthoaminophenol and its sulfate, both of which are oxidation bases that are inferior in color to diamine type dyes. The amount is preferably 0.01% to 5% by weight, more preferably 0.05% to 3% by weight. If it is less than 0.01% by weight, almost no color develops, and even if it exceeds 5% by weight, the degree of color development does not change much.

  Specific examples of the component (B) of the present invention are metaaminophenol and its sulfate, 5-aminoorcresol and its sulfate, phloroglucin, and α-naphthol (also known as 1-naphthol) couplers. The blending amount is the same as that of the aforementioned component (A).

  Component (C) of the present invention is sodium hydrosulfite and is known as an antioxidant component in hair dyes (Patent Document 5 and Patent Document 6), but plays an even more important role in the present invention. It has been found in the present invention that hydrosulfite sodium has a further decolorizing effect, whereas other reducing agents such as sulfites and thioglycolates only prevent oxidation of the product itself. That is, it acts on the color forming compound produced by oxidative polymerization and decolorizes a part thereof, so that it is necessary to further add a dye intermediate in order to obtain a desired hair color. As a result, more dye intermediates remain in the hair as an oxidized polymer, which is thought to contribute to the improvement of elasticity and stiffness.

  As a compounding quantity, 0.001 weight%-5 weight% are preferable, and 0.01 weight%-2 weight% are more preferable. If it is less than 0.001% by weight, it is not very different from the case of not blending, and if it exceeds 5% by weight, the effect is not so much changed, which is uneconomical.

  The oxidative hair dye of the present invention is further selected from component (D) fatty acid ester oils consisting of fatty acids having 12 to 22 carbon atoms and branched alkyl groups having 2 to 20 carbon atoms and component (E) octyldodecanol. One type or two or more types of components can be blended. These coat the hair surface damaged by the alkali contained in the oxidative hair dye, and exhibit an excellent emollient effect, so that it is possible to further impart flexibility to the hair that has been improved.

  Specific examples of component (D) include octyldodecyl oleate, isopropyl myristate, octyldodecyl myristate, isooctyl palmitate, isopropyl palmitate, and the like. Among these, it is particularly preferable to use isooctyl palmitate and octyldodecanol of component (E) in combination.

  The total amount of these compounds is preferably 1% by weight to 20% by weight, and more preferably 5% by weight to 15% by weight. If it is less than 1% by weight, a sufficient emollient effect cannot be obtained, and if it exceeds 20% by weight, the effect does not change so much, which is uneconomical.

  The oxidative hair dye according to the present invention can take a desired dosage form such as liquid, emulsion, gel or cream, but is gel or cream in terms of operability and improved hair feel after treatment. The shape is preferable, and a cream shape in which an emollient is easily blended is particularly optimal.

  Furthermore, the oxidation hair dye by this invention can be mix | blended with the arbitrary components used for a normal oxidation hair dye in the range by which the target effect is not impaired. Examples include alkali agents, solvents, oil agents, thickeners, gelling agents, humectants, chelating agents, preservatives, flavoring agents, anti-inflammatory agents, surfactants and antioxidants.

  The oxidative hair dye according to the present invention can obtain the hair color and shade of the color within the range possible by the combination of the components (A) and (B). A larger amount is preferable, and untreated hair or lighter color (corresponding to level = 5 to 15 according to the Japan Hair Color Association), especially when coloring at level = 6 or higher, ordinary diamine type dyes develop color in a very small amount. In contrast, the combination of components (A) and (B) is preferable because the blending amount increases and the firmness and stiffness can be improved.

  EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these. The blending amount is% by weight.

Examples and Comparative Examples of the present invention are shown in Tables 1 and 2. The pH was measured with a stock solution at 25 ° C. using a pH meter (manufactured by Toa DKK: HM-30G), and the level was based on the standards of the Japan Hair Color Association. The evaluation method is shown below.
(Evaluation methods)
First, the oxidative hair dye (first agent) of Examples and Comparative Examples is mixed with 6% hydrogen peroxide solution (second agent), and then applied to the hair bundle and left at room temperature for 30 minutes. After washing with water and drying with a towel and a dryer, the following evaluation was performed. The hair bundle was prepared using about 5 g of hair of about 25 cm in length (manufactured by Kawamura Katsura Corporation), washed with 30% aqueous solution of polyoxyethylene (3EO) lauryl ether sulfate, washed with water and then towel-dried Used after.
1. Emollient effect (excluding comparative examples)
About the Example, it evaluated by the sensory test by tactile sense based on the following reference | standard.
○: Moist and smooth feeling is quite good and the fingering is excellent.
Δ: Moist and smooth.
X: There is no moist and smooth feeling.
2. Further, all the treated hair bundles of Examples and Comparative Examples were subjected to the above-described hair washing and towel drying 10 times, dried with a dryer, and then evaluated by a sensory test based on the following criteria.
○: There is a firmness and stiffness equal to or greater than that of untreated hair.
Δ: Slightly inferior to untreated hair, but has sufficient elasticity and stiffness.
X: There is not much elasticity and stiffness, and it is considerably inferior to untreated hair.
3. Considering the above evaluation and the level of each color, comprehensive evaluation is performed according to the following criteria.
○: Excellent, △: Good, ×: Impossible

In addition, the following were used for each component in an Example and a comparative example. (Registered trademark is indicated by (R).) However, the oxidation base of the diamine type dye is component (X), the coupler is component (Y), and the other non-diamine type coupler is component (Z).
(A) Paraaminophenol: manufactured by Nippon Pure Chemicals Co., Ltd. (A) Orthoaminophenol: manufactured by Nippon Pure Chemicals Co., Ltd. (B) Metaaminophenol: manufactured by Mitsui Chemicals Fine Company (B) 5-aminoorthocresol: manufactured by Mitsui Chemicals Fine Company ( B) Phloroglucin: manufactured by Wako Pure Chemical Industries, Ltd. (B) α-naphthol: manufactured by Katayama Chemical Co., Ltd. (X) paraphenylenediamine: manufactured by Daishin Kasei Kogyo Co., Ltd. (X) Toluene sulfate-2,5-diamine: Osaka Sasaki Chemical (Y) Hydrochloric acid 2,4-diaminophenoxyethanol: Goni Chemical Industry Co., Ltd. (Z) Resorcin: Sumitomo Chemical Co., Ltd. (C) Hydrosulfite sodium: Kishida Chemical Co., Ltd. (D) Isooctyl palmitate:
NIKKOL (R) IOP manufactured by Nikko Chemicals
(D) Isopropyl palmitate: manufactured by Cognis Japan Co., Ltd. P. P.
(D) Isopropyl myristate: Cognis Japan Co., Ltd. P. M.M.
(E) Octyldodecanol: manufactured by Cognis Japan, euthanol (R) G

Furthermore, the following were used about the other component.
(Alkaline agent) 28% ammonia water: Toyama Pharmaceutical Co., Ltd. (Oil agent) Cetanol: Kao Co., Calcoal (R) 6098
(Oil agent) Stearyl alcohol: manufactured by Kao Corporation, Calcoal (R) 8098
(Cationic surfactant) Cetyltrimethylammonium chloride:
Made by Toho Chemical Industry Co., Ltd., Kachinal CTC-70ET
(Cationic surfactant) Stearyltrimethylammonium chloride: manufactured by Kao Corporation
Coatamine (R) 86P Conch (nonionic surfactant) monoglyceryl stearate manufactured by Nikko Chemicals,
NIKKOL (R) MGS-BV
(Nonionic surfactant) Polyoxyethylene cetyl ether (30E.O.)
: NIKKOL (R) BC-30TX, manufactured by Nikko Chemicals
(Moisturizer) 1,3-butylene glycol: Daicel Chemical Industries, Ltd. (chelating agent) hydroxyethane diphosphonic acid (30%):
Made by Solusia Japan, Tarpinal (R) 4NL
(Antioxidant) Anhydrous sodium sulfite: manufactured by Jinzu Chemical Industry Co., Ltd., anhydrous sodium sulfite

  Examples 1 to 3 are combinations including all the components (A), (B), (C), (D), and (E), respectively, and have brightness of levels 7 to 9. In addition, Comparative Examples 1 to 3 mainly use a diamine type dye, and are of a conventional type adjusted to the same hair color and level as in Examples 1 to 3, and do not include component (A), and component (B) is also included. It contains only a small amount for fine adjustment of hair color.

  Among them, Example 1 and Comparative Example 1 have the same hair color and level, but when looking at the total amount of the dye intermediate, Example 1 is about 2.3 times the amount of Comparative Example 1, and this difference is sharp.・ It is thought that it appears as it is in the effect of stiffness improvement.

  Similarly, Example 2 is twice the amount of Comparative Example 2, and Example 3 is 2.5 times the amount of Comparative Example 3. However, the level of Example 3 is 9, which is considerably brighter than that of Example 1, so that the absolute amount of the dye intermediate is small, and the elasticity is slightly inferior.

  In Example 4, the component (C) sodium hydrosulfite in Example 1 was replaced with anhydrous sodium sulfite, but the dyeing level was deeper than Example 1 and the level became 6. Therefore, in order to achieve the same level as in Example 1, it is necessary to reduce the amount of the dye intermediate.

  Examples 5 and 6 were obtained by replacing components (D) and (E) of Example 1 and mixing only one of them, both of which have slightly inferior emollient effects than Example 1 containing both components. It was.

  In Examples 7 to 9, the color was different from that in Examples 1 to 3, and a part of anhydrous sodium sulfite was replaced with the component (C), but the effect was the same as in Examples 1 to 3.

  As described above, each of the oxidative hair dyes shown in Examples 1 to 9 was an excellent oxidative hair dye that imparts continuous firmness and firmness to the hair and further provides a good emollient effect.

Claims (5)

An oxidative hair dye containing the following components (A) and (B) and not containing a diamine type dye.
(A) One or more oxidation bases selected from paraaminophenol, orthoaminophenol, and salts thereof.
(B) One or more couplers selected from metaaminophenol, 5-aminoorthocresol and salts thereof, and phloroglucin and α-naphthol.   Furthermore, the oxidative hair dye of Claim 1 containing a component (C) hydrosulfite sodium.   The oxidative hair dye of Claim 1 or Claim 2 which a component (B) consists of 1 type (s) or 2 or more types chosen from metaaminophenol and its salt, and phloroglucin. Furthermore, the oxidative hair dye of Claims 1-3 of the emulsion type containing the 1 type, or 2 or more types of component chosen from the following component (D) and (E).
(D) A fatty acid ester oil comprising a fatty acid having 12 to 22 carbon atoms and a branched alkyl group having 2 to 20 carbon atoms.
(E) Octyldodecanol   The hair dye level is in the range of 5 to 15, and the oxidative hair dye according to claim 1 to 4.